Add G-code formatting

[jalabaya]

Describe feature

Examples:

https://zero-divide.net/?article_id=4809_notepad-absolutely-free-g-code-editor-with-code-highlighting

https://github.com/robEllenberg/gcode-syntax

https://ncnetic.com/notepad-gcode-plugin/

https://edingcnc.com/notepad-and-visual-studio-code-g-code-and-macro-syntax-highlighters-now-available/

Additional Information

No response